Simon told Uncut magazine that a clue to the “Vain” man's identity can be heard on an acoustic version of the song that is featured on her upcoming album, “Never Been Gone.”

“You know what, I'm just goin to tell you this. The answer is on the new version of ‘You're So Vain,’ on my new record. ... There's a little whisper and it's the answer to the puzzle.”

According the Britain's The Sun newspaper, Simon whispers Geffen's name backwards on the track.

Geffen was the chief of Elektra Records, Simon's label at the time the song was originally released. According the WENN news service, the song, which was thought to be about a failed relationship, is now thought to hint at Simon's resentment after Geffen allegedly put more efforting into promoting singer Joni Mitchell.

For years, the song was rumored to be about one of Simon's ex-boyfriends, who included actor Warren Beatty and Rolling Stones frontman Mick Jagger.